The Port Jackson shark (Heterodontus portusjacksoni) is a nocturnal , oviparous (egg laying) type of bullhead shark of the family Heterodontidae, found in the coastal region of southern Australia, including the waters off Port Jackson. It has a large, blunt head with prominent forehead ridges and dark brown harness-like markings on a lighter grey-brown body, and can grow up to 1. 65 metres (5. 5 ft) long.
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